Patents by Inventor Fumihiko Isogai

Fumihiko Isogai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 3989974
    Abstract: A gas discharge display panel is disclosed for displaying images by selectively making luminescent cross points of main electrodes arranged to form the matrix through a discharge gap. The display includes a switching operation part which comprises auxiliary electrodes which are arranged in parallel to the main electrodes and to which a turn-on or turn-off pulse is applied and switching electrodes which cross the auxiliary electrodes to form the matrix through the discharge gap so as to select predetermined cross points of the auxiliary electrodes. The switching operation part is incorporated in the panel together with a display part comprising the main electrodes to form the matrix through the discharge gaps whereby switching circuits for switching each of the main electrodes which are complicated and expensive can be improved.
    Type: Grant
    Filed: July 8, 1975
    Date of Patent: November 2, 1976
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroshi Tottori, Shigemasa Yoshida, Fumihiko Isogai, Etsuo Hatabe